Ahatchuyuk

A division of the Kalapooian family on and about Pudding r., an E. tributary of the Willamette, emptying into it about 10 m. s. of Oregon City, Oreg. French Prairie Indians -- so called by early settlers. Pudding River Indians -- so called by various authors.

Source: Handbook of American Indians North of Mexico, Frederick Webb Hodge, 1907.